:root {
  color-scheme: dark;
  --bg: #071018;
  --surface: #0f1c27;
  --surface-2: #152938;
  --fg: #f4f8fb;
  --muted: #a9bac7;
  --brand: #35d2bd;
  --brand-dark: #062f2b;
  --line: #28404f;
  --focus: #ffd166;
  --shadow: 0 18px 45px rgba(0, 0, 0, 0.28);
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    'Segoe UI',
    Roboto,
    Arial,
    sans-serif;
  line-height: 1.6;
}
a {
  color: var(--brand);
  text-underline-offset: 0.18em;
}
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}
.skip-link {
  position: absolute;
  left: 1rem;
  top: -5rem;
  z-index: 10;
  background: #fff;
  color: #111;
  padding: 0.7rem 1rem;
  border-radius: 0.5rem;
}
.skip-link:focus {
  top: 1rem;
}
.site-header {
  padding: 1.1rem clamp(1rem, 4vw, 3rem) 3.5rem;
  background:
    radial-gradient(circle at 80% 0, #153f4b 0, transparent 45%),
    linear-gradient(145deg, #0b1a25, #092b2d);
  border-bottom: 1px solid var(--line);
}
.site-nav {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.site-nav .brand {
  color: var(--fg);
  font-size: 1.25rem;
  font-weight: 800;
  text-decoration: none;
  letter-spacing: -0.02em;
}
.site-nav div {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.site-nav div a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 650;
}
.hero {
  max-width: 820px;
  margin: 4.5rem auto 0;
  text-align: center;
}
.hero h1 {
  margin: 0.2rem 0 0.8rem;
  font-size: clamp(2.4rem, 7vw, 5.2rem);
  line-height: 1;
  letter-spacing: -0.055em;
}
.tagline {
  max-width: 700px;
  margin: 0 auto;
  color: var(--muted);
  font-size: clamp(1rem, 2.5vw, 1.25rem);
}
.eyebrow {
  margin: 0 0 0.35rem;
  color: var(--brand);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}
.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: clamp(2rem, 5vw, 4rem) 1rem 5rem;
}
.lead-callout {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 2rem;
  padding: clamp(1.3rem, 4vw, 2.25rem);
  margin-bottom: 4rem;
  background: linear-gradient(130deg, var(--surface-2), #123d3c);
  border: 1px solid #27635f;
  border-radius: 1.25rem;
  box-shadow: var(--shadow);
}
.lead-callout h2,
.section-heading h2,
.page-hero h1 {
  margin: 0.15rem 0 0.55rem;
  line-height: 1.12;
  letter-spacing: -0.025em;
}
.lead-callout p {
  margin: 0;
  color: var(--muted);
}
.primary-btn,
.card-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.72rem 1rem;
  border-radius: 0.7rem;
  background: var(--brand);
  color: var(--brand-dark);
  font-weight: 800;
  text-decoration: none;
  text-align: center;
}
.section-heading {
  max-width: 720px;
  margin-bottom: 1.6rem;
}
.section-heading p {
  color: var(--muted);
}
.guide-preview {
  margin-bottom: 4rem;
}
.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}
.guide-card {
  padding: 1.2rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 1rem;
}
.guide-card h2,
.guide-card h3 {
  margin: 0.2rem 0 0.55rem;
  line-height: 1.25;
}
.guide-card h2 a,
.guide-card h3 a {
  color: var(--fg);
  text-decoration-color: var(--brand);
}
.guide-card p {
  margin: 0;
  color: var(--muted);
}
.guide-kicker {
  color: var(--brand) !important;
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.section-action {
  margin-top: 1.2rem;
}
.guide-hero-image {
  display: block;
  width: min(100%, 960px);
  height: auto;
  margin: 1.5rem auto;
  border: 1px solid var(--line);
  border-radius: 1rem;
  box-shadow: var(--shadow);
}
.guide-meta,
.guide-summary {
  color: var(--muted);
}
.guide-summary {
  font-size: 1.08rem;
}
.guide-steps {
  counter-reset: guide-step;
  list-style: none;
  padding: 0;
}
.guide-steps > li {
  counter-increment: guide-step;
  margin: 1.25rem 0;
  padding-left: 3rem;
  position: relative;
}
.guide-steps > li::before {
  content: counter(guide-step);
  position: absolute;
  left: 0;
  top: 0;
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: var(--brand);
  color: var(--brand-dark);
  font-weight: 900;
}
.guide-steps h3 {
  margin: 0 0 0.35rem;
}
.guide-note {
  padding: 1rem;
  background: var(--surface-2);
  border-left: 4px solid var(--brand);
  border-radius: 0.6rem;
}
.guide-cta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.guide-cta p {
  margin: 0;
  max-width: 560px;
}
.breadcrumbs {
  max-width: 780px;
  margin: 0 auto 1rem;
  color: var(--muted);
  font-size: 0.92rem;
}
.breadcrumbs a {
  color: var(--muted);
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 1rem;
}
.card {
  scroll-margin-top: 1rem;
  min-height: 190px;
  padding: 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 1rem;
  box-shadow: var(--shadow);
}
.card:target {
  border-color: var(--focus);
  box-shadow: 0 0 0 3px rgba(255, 209, 102, 0.2);
}
.card-title {
  margin: 0;
  font-size: 1.08rem;
  line-height: 1.35;
}
.card-price {
  margin: 0;
  color: var(--muted);
}
.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: auto;
}
.card-btn {
  flex: 1 1 95px;
}
.btn-secondary {
  background: transparent;
  color: var(--brand);
  border: 1px solid var(--brand);
}
.card-btn:hover,
.primary-btn:hover {
  filter: brightness(1.08);
}
.btn-secondary:hover {
  color: var(--brand-dark);
  background: var(--brand);
  filter: none;
}
.card-btn.disabled {
  background: #667985;
  color: #fff;
  pointer-events: none;
}
.notice,
.loading {
  grid-column: 1/-1;
  padding: 1rem;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 0.8rem;
}
.site-footer {
  padding: 1.3rem 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
  color: var(--muted);
  border-top: 1px solid var(--line);
}
.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.page-header-simple {
  padding-bottom: 1rem;
}
.page-hero {
  max-width: 780px;
  margin: 0 auto 2rem;
}
.page-hero p {
  color: var(--muted);
  font-size: 1.1rem;
}
.content-card {
  max-width: 780px;
  margin: 0 auto 1.25rem;
  padding: clamp(1.1rem, 4vw, 2rem);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 1rem;
}
.content-card h2 {
  margin-top: 0;
  line-height: 1.2;
}
.content-card h3 {
  margin-top: 1.5rem;
}
.content-card li {
  margin: 0.45rem 0;
}
.ml-frame {
  min-height: 285px;
  margin-top: 1.2rem;
  padding: 1rem;
  background: #fff;
  color: #16212b;
  border-radius: 0.8rem;
}
.form-fallback {
  margin: 0.8rem 0 0;
  font-size: 0.9rem;
  color: var(--muted);
}
.consent {
  font-size: 0.9rem;
  color: var(--muted);
}
.download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.2rem 0;
}
.product-suggestions {
  display: grid;
  gap: 0.75rem;
}
.product-suggestions a {
  padding: 1rem;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  text-decoration: none;
}
.contact-list {
  list-style: none;
  padding: 0;
}
.contact-list li {
  margin: 0.65rem 0;
}
@media (max-width: 720px) {
  .site-nav {
    align-items: flex-start;
  }
  .site-nav div {
    justify-content: flex-end;
    gap: 0.65rem;
  }
  .hero {
    margin-top: 3rem;
  }
  .lead-callout {
    grid-template-columns: 1fr;
  }
  .lead-callout .primary-btn {
    width: 100%;
  }
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.4rem;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    transition: none !important;
  }
}
@media (prefers-color-scheme: light) {
  :root {
    color-scheme: light;
    --bg: #f5f8fa;
    --surface: #fff;
    --surface-2: #eaf4f4;
    --fg: #102433;
    --muted: #506675;
    --line: #cbdbe3;
    --brand: #087f73;
    --brand-dark: #fff;
    --shadow: 0 16px 38px rgba(29, 55, 68, 0.12);
  }
  .site-header {
    background:
      radial-gradient(circle at 80% 0, #c7f1eb 0, transparent 45%),
      linear-gradient(145deg, #edf7f7, #dfeff2);
  }
  .site-nav .brand {
    color: var(--fg);
  }
  .ml-frame {
    border: 1px solid var(--line);
  }
}